Placeholder in --gdk-debug=FLAGS in --help output
Placeholder in --gdk-no-debug=FLAGS in --help output
Placeholder in --gtk-debug=FLAGS in --help output
Placeholder in --gtk-no-debug=FLAGS in --help output

Current
Kurdish (Sorani):

(no translation yet)

Located in
gdk/gdk.c:224 gdk/gdk.c:227 gtk/gtkmain.c:460 gtk/gtkmain.c:463